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Finding the Fourth Proportional to 254,031.72, 381,073.09 and 67,043.22

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Solution

The fourth proportional to 254,031.72, 381,073.09 and 67,043.22 is: 100,571.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,031.72 : 381,073.09 = 67,043.22 : x
  2. Step 2: Convert to fraction form
    254,031.72/381,073.09 = 67,043.22/x
  3. Step 3: Cross multiply
    254,031.72x = 381,073.09 × 67,043.22
  4. Step 4: Simplify right side
    254,031.72x = 25,548,367,008.95
  5. Step 5: Solve for x
    x = 25,548,367,008.95/254,031.72
  6. Step 6: Final answer
    x = 100,571.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.